Books in Astronomy
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Half-hours with the Telescope
Richard A. Proctor
532 downloads
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Other Worlds
Garrett Putman Serviss
530 downloads
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Cosmografía (Spanish)
Amédée Guillemin
510 downloads
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Are the Planets Inhabited?
E. Walter Maunder
490 downloads
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Astronomical Instruments and Accessories
William Gaertner and Company
410 downloads
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Watchers of the Sky
Alfred Noyes
410 downloads
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Le Système Solaire se mouvant (French)
August Tischner
368 downloads
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A Textbook of General Astronomy for Colleges and Scientific Schools
Charles A. Young
363 downloads
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The Future of Astronomy
Edward C. Pickering
338 downloads
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An Introduction to Astronomy
Forest Ray Moulton
310 downloads
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Mathematical Geography
Willis E. Johnson
248 downloads
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The Tides and Kindred Phenomena in the Solar System
Sir George Howard Darwin
227 downloads
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Scientific Papers by Sir George Howard Darwin. Volume V. Supplementary Volume
Sir George Howard Darwin
161 downloads